RHSA SNC1D: Chemistry
Name: ______________
HOOK DIAGRAMS and NAMING CHEMICALS
Text: Page 64-65, Table 2 and Table 3.
Remember bonding capacity is the ability of an atom
of an element to chemically combine with other
atoms.
Group
1
# Bonds 1
Example Na
Element
2
2
Be
13
3
Al
14
4
C
15
3
P
16
2
O
17
1
Cl
18
0
Ne
Elements in groups 2 – 12 do not follow these bonding
patterns and the teacher will always tell you the
number of bonds made by these elements.
Hook Diagrams show the bonding capacity and
number of bonds. All bonds (hooks) must be filled.
For example: Na2O
Na
O
Na
RHSA SNC1D: Chemistry
Name: ______________
Rules for Naming Chemicals
1. Compounds – ionic bond
a) Name of the metal first then the non-metal.
b) Change the ending of the non-metal to “ide”.
Example:
Na2O - sodium oxide
CaCl2 - calcium chloride
2. Molecules – covalent bonds
a) If both atoms are the same, the molecule name is
the same as the element name.
b) Write the name of the each non-metal.
c) For the first atom, add a prefix only if there is
more than one atom.
For the second atom, add a prefix.
d) Change the ending of the second atom to “ide”.
Prefixes
1
2
3
- mono
- di
- tri
4
5
- tetra
- penta
Examples:
H2O
- dihydrogen monoxide, or water
CO2
- carbon dioxide
RHSA SNC1D: Chemistry
Name: ______________
HOOK DIAGRAMS and NAMING CHEMICALS
Text: Page 64-65, Table 2 and Table 3.
Remember bonding capacity is the ability of an atom of an element to chemically combine with other atoms.
The periodic table can be used to determine the __________________________ of an element.
Group
# Bonds
1
2
13
14
15
16
17
18
Example
Element
Elements in ____________________________________________________ and the teacher will always tell
you the number of bonds made by these elements.
Hook Diagrams show the bonding capacity and number of bonds. All bonds (hooks) must be filled.
For example, Na2O
Rules for Naming Chemicals
1. Compounds – _________________________
a) ________________________________________________
b) ________________________________________________
Example:
Na2O CaCl2 -
RHSA SNC1D: Chemistry
Name: ______________
2. Molecules – __________________________________
a) ___________________________________________________________________________
b)___________________________________________________
c) ________________________________________________________
__________________________________________________
d) ______________________________________
Prefixes
1
- ____________
4
- __________
2
- ____________
5
- ___________
3
- ___________
Examples:
H2O
- _____________________________________ or water
CO2
- _______________________
Now try drawing and naming the following chemicals:
CaCl2 - Name: ___________________________
Type of bond? _____________________
Molecule or compound? ________________
Hook Diagram:
Al2O3 - Name: _________________________________
Type of bond? _____________________
Molecule or compound? ________________
Hook Diagram:
Note: More naming rules will be learned in grade 10.
RHSA SNC1D: Chemistry
Name: ______________
TWENTY QUESTIONS ABOUT…chemical formulas and combining capacity!
1. What is the combining capacity for beryllium?
2. What is the combining capacity for nitrogen?
3. What is the combining capacity for sulphur?
4. How many bonds can an atom of carbon make?
5. What is the combining capacity of Ca?
6. Name a metal with a combining capacity of 3.
7. Name an element that does not bond with other elements.
8. What is the combining capacity of B?
9. Name three elements that have a combining capacity of 1.
10. What is the chemical formula for magnesium chloride?
11. What is the chemical formula for sodium fluoride?
12. What is the chemical formula for aluminium oxide?
13. Name three metals that have a combining capacity of 2.
14. Which non-metal has a combining capacity of 1, O, F or S?
15. Which non-metal has a combining capacity of 3, N, C or Ar?
16. Which metal has a combining capacity of 2, K, Li or Mg?
17. Which element has a carry capacity of 1, Ne, Ar or Na?
There are common names for some molecules. Use the text p 64-65 and your Modelling
Molecules worksheet. Write down the common name for these chemicals:
NH3
H2O2
H2O
CH4
O3
RHSA SNC1D: Chemistry
Name: ______________
Bonding Capacity and Naming Chemicals – Worksheet 1
Read text p 64 – 65.
Do p 65 #1-3, 5 when you are finished this worksheet.
Each hook represents a bond an atom wants to make. Draw hook diagrams for compounds formed from the
following pairs of elements, write the formula, the name of the chemical and the type of bond. Remember
all the “hooks” must be attached to another “hook”.
Hook Diagram
Potassium and Oxygen
Formula:
Combining Capacity of
Potassium:
Name:
Combining Capacity of
Oxygen:
Type of Bond?
Covalent or Ionic
Hook Diagram
Lithium and Fluorine
formula:
Combining Capacity of
Lithium:
Name:
Combining Capacity of
Fluorine:
Type of Bond?
Covalent or Ionic
RHSA SNC1D: Chemistry
Name: ______________
Hook Diagram
Calcium and Phosphorus
formula:
Combining Capacity of
Calcium:
Name:
Combining Capacity of
Phosphorus:
Type of Bond?
Covalent or Ionic
Hook Diagram
Aluminum and Sulphur
formula:
Combining Capacity of
Aluminum:
Name:
Combining Capacity of
Sulphur:
Type of Bond?
Covalent or Ionic
Make your own:
Hook Diagram
_______ and _______
Formula:
Combining Capacity of
__________
Name:
Combining Capacity of
________________
Type of Bond?
Covalent or Ionic
RHSA SNC1D: Chemistry
Name: ______________
Name: _______________________
Bonding Capacity and Naming Chemicals – Worksheet 2
Draw ball and hook diagrams for each molecule.
Name the chemical. If the chemical has covalent bonds circle molecule or circle compound for ionic bonds.
NaF
H2 O
Na2O
Name:____________________
Molecule or compound ?
Name:____________________
Molecule or compound ?
Name:____________________
Molecule or compound ?
CaCl2
AlCl3
CF4
Name:____________________
Molecule or compound ?
Name:____________________
Molecule or compound ?
Name:____________________
Molecule or compound ?
K2S
Mg3P2
B2O3
Name:____________________
Molecule or compound ?
Name:____________________
Molecule or compound ?
Name:____________________
Molecule or compound ?
RHSA SNC1D: Chemistry
Name: ______________
Bonding Capacity and Naming Chemicals- Extra 1
For the following pairs of elements, predict the chemical formula for the resulting compound, and draw hook
diagrams. Write the name of the resulting compound. The combining capacities are in brackets for some
metals when you can not easily determine the combining capacity.
Copper (1) and Chlorine:
Chemical formula:
Name :
Copper (2) and Iodine:
Chemical formula:
Name :
Calcium and Chlorine:
Chemical formula:
Name :
Calcium and Oxygen:
Chemical formula:
Name :
Silver (1) and Chlorine:
Chemical formula:
Name :